| id | 0..1 | string | Logical id of this artifact |
| meta | 0..1 | Meta | Metadata about the resource |
| implicitRules | 0..1 | uri | A set of rules under which this content was created |
| language | 0..1 | code | Language of the resource content |
| text | 0..1 | Narrative | Text summary of the resource, for human interpretation |
| contained | 0..* | Resource | Contained, inline Resources |
| extension | 0..* | Extension | Additional content defined by implementations |
| modifierExtension | 0..* | Extension | Extensions that cannot be ignored |
| identifier | 0..* | Identifier | Unique identifier of the catalog item |
| type | 0..1 | CodeableConcept | The type of item - medication, device, service, protocol or other |
| orderable | 1..1 | boolean | Whether the entry represents an orderable item |
| referencedItem | 1..1 | Reference | The item that is being defined |
| additionalIdentifier | 0..* | Identifier | Any additional identifier(s) for the catalog item, in the same granularity or concept |
| classification | 0..* | CodeableConcept | Classification (category or class) of the item entry |
| status | 0..1 | code | draft | active | retired | unknown |
| validityPeriod | 0..1 | Period | The time period in which this catalog entry is expected to be active |
| validTo | 0..1 | dateTime | The date until which this catalog entry is expected to be active |
| lastUpdated | 0..1 | dateTime | When was this catalog last updated |
| additionalCharacteristic | 0..* | CodeableConcept | Additional characteristics of the catalog entry |
| additionalClassification | 0..* | CodeableConcept | Additional classification of the catalog entry |
| relatedEntry | 0..* | BackboneElement | An item that this catalog entry is related to |